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3 Sheets-Sheet 1. N. LILIENBERG 8v G. S. DWIGHT. GAS PRODUCER FORME'I'ALLURGIG OPERATIONS. No. 329,058.

Patented Oet. 27.1885.

(No Model.)

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Patented Oct. 27. 1885.

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(No Model N.VLILIENBERG a. G. s. DWIGHT. GAS PRODUCER FOR METALLURGICOPERATIONS. No. 329,058.

(No Model.) 3 Sheets-Sheet 3.

N.'L1L1ENBERG au G. s. DWIGHT. GAYS PRODUCER FOR METALLURGIG OPERATIONS.

No. 329,058. Patented Oct. 27, 1885.

tol

. tion of the apparatus.

UNirnn STATES PATENT Garros.

NILs LILIENBERG ann GEORGE SPRINGDWIGHT, or New Youn, n. "Y.

vrGAS-PRODUCER FOR ll/iELT'LLURGICv OPERATIONS.

SPECIFICATION forming part of Letters Patent Nof329,( )58, datedvOctober 27, 1885.

' Application sled Fabi-news1, less. serial No. 157,199. (no model.)

.To all whom it may concern.-

Beit known that we,N1Ls' LILIENBERG and GEORGE S. wienr, ofthe city andState of New York, have invented an Improvementin Gas-Producers forMetallurgie Operations, of which the following is a specification. Theobject of this invention is to-eonsume fuel gradually and produce aheating-gas containing a large volume of hydrogen, and to raisethis gasto a high temperature previous to its combustion in the presence ofhighlyheated atmospheric air, and also to make use of the heated gases,in their progress to the chimney, for heating up the air-blast andgases,- so asto economize the heat, and to produce an intense flameadapted to the melting of iron, steel, or other metals.

'In the drawings, b'igure ll is a vertieal sec- Fig. 2 is a crosssectionthrough the generators atthe line .n a'.

- Fig. Sis a cross-section through the iiues at the line a l. Fig. 4 isa cross-section at the line c d. Fig.- 5 is a cross-section at 'the lineef. Fig. 6 is a cross-section at 1` 1, Fig; 1, through the"meltingfurnace. Fig. 7 is asec- -tion oi' the same at the line 2 2, Fig.6; and

Fig. 8 is a plan View partially in section. y

G G represent two generators, which are preferably circular inform, andmade of brick-work within metallic cases. The upper and lower portionsof each generator are contracted, and there is a due, h, around the upvper portion of such generator, with lateral Aopenings into thegenerator, and two escapelues, h h2, pass oit' toward eachother, andbetween them is a lateral line, ha, passing oft' to l a descending iiue,7and thence to the chimney, as hereinafter described. Above the .ilues7L h2 h8 there is a dome, k, into which' steam is supplied from anysuitable boiler, and within this dome is a movable valve, k', actuatedby a rod, t', rock-shaft i?, and lever and handle t3, and there is acounter-weight, a", upon the rock-shaft i, which serves to insure thecomplete movement of the valve and hold it in either position. Thisvalve k is hollowpandfof a length adapted to extend across and connectthe upper ends of the ilues hl, as shown in Fig. 2, or it may be movedinto the position shown by dotted lines to open' the communicationbetween the tlues h2 h3. It is now to be understood that when thisv'alve Yis in the position shown in steam from the dome k passes downthrough the iues hgh into the generator G', and down' through 5 5 thefuel in the same, so. that the steamis decomposed, theoxygen 'combiningwith the iu-. candescent fuel, and the hydrogen, commingled withcarbonio oxide and other-products,v of

combustion, passing off, as hereinafter de- '6o scribed. During thissame time the fuel in the generator G is being consumed and its heatintensified by air supplied at the bottom 'and'passing up through thefuel, the products I of combustion going by the lues lz, h through thevalve k to the flue h, and away by the descending flue h4. moved, the.operations .are' reversed,A and the heating-gas is generated in G whilethe lire'. is being intensified 'in TF-nel 'issuppliedige'f'7ovriodically to these generators, vas required,by

a hopper, G?, to the generator G', and a hopper,

G3, tothe generator G. Each hopper is provided with a movable bottom, g,at its lower end operated by a rod, g.

nication between the hoppers and the generators. When depressed,the fuelis discharged from the hoppers to the generators: rlhelower part of eachgenerator is contracted, and there 8o is an annular air-pipe, Z, beneaththis contraction, and there is a chamber, L, below each generator,forming an ash-pit, and also a gas# line. To ,the flue or chamber L,below the generator G, is connectedra branch pipe, L3, 85

and to-the chamber L, belowthe generator G', is connected the'ueU. Thesedues L2 and L3 lead to the gaspipe L4. There are valves Za Z in thebranch pipes LBLZ, respectively. lThe valves Z3 Z6 are connected by arod, i4, and this 9o` is moved by a lever, Z5, and shaft il, and theseare made so that when one valve is withdrawn to open the branch pipe L3the valve to the branch pipe L2 is closed, and vice versa. 'ZB is avalve in the pipe L4 for closing the outlet of 95 Agas from thegenerators.

Whewthesteain-.valve lc. is

These movable bottoms when raised act asvalves to .close the commulhesevalves are prefer- 10o such a manner that by movingthe lever l5 andshaft i7 the four valves Z3 Z6 and nn are simultaneously operated. Whenn is closed, nztis open to admit air into the generator G, and 5 thegas-valve Z" is simultaneously closed,'the gas-valve l being opened. Inthis position of the valve air will be passing in by the valve n* intothe generator G to intensify the tire, and the heating-gas generated inG will be passing o" by the valve Z. When the lever Z5 and shaft il aremoved and the positions of the valves reversed, the fire will beintensified in G by air admitted by the valven, and the heating-gas fromthe generator G will pass o by the valve Z".

It wi-ll be observed by reference to Fig. 2 that 'each chamber L beneaththe generator is sufficiently large for a heap of ashes therein toaccumulate and support the fuel in the generator, andthe air issuingfrom the annular pipe l passes downwardly into this chamber and asciendethrough the fuel, so thattthe combustion thereof is rendered perfect.heating-gas is being produced in agenerator, the gases pass down intosuch chamber L, and are led away, as aforesaid.

At a suitable distance from the generators.

there is an open hearth or furnace for the metallurgie operations. XVeprefer to make use of a hearth, 0, having a discharge-trough, o, at oneend, the hearth being made of silieious or basic materials within acasing or car,o,on wheels o, which rest upon a track, o, and can bemoved back or forward thereon.

We make use of a furnace-casing, P, snpported by the vbars and tie-rodsp, andwithin these are `fire-brick partitions, forming inlet- -iiues p1." and outlet-dues pf' p. The inletflues p p extend across above thehearth O, and there isa central opening and a deflector, by which thedame is directed downwardly upon the Imaterials to be melted upon thehearth O,and the dame and products of combustion pass away by the dues pp.

`Upon reference to the cross-section; Fig. 6, and the longitudinalsection, Fig. 7, it will be seen that the iiues pp2 pp are at oppositesides of the'hearth 0, and t-hat this hearth is introduced into anopening provided for it 'cromwiseof the furnace. When this hearth =O `isrolled into its place,a luting of clay is'to be applied all around uponits upper edges, vandthe hearth is vto ybe raised up bodily,so :that theluting is compressed against and unites with the stationary portions of:the rruace,and'the 'bearers o5 are to be slipped in beneath the-hearthOto lretain it i n the elevated position. W hen thehearth requires to bere- 'lined or frepaired, the bearers o are to be rcymovednnd the hearthO allowed to drop down lwith its wheels upon the track. This breaks awayvthe luting and allows the hearth to be easily rolled'out from beneaththe stationary portions ofthe-furnace. The arches, provided 65withstoppexs at o, give access to the hearth O for introducing thematerial to be melted and for stirring the same. It is now to beunderstood that heating-gas is to be admitted through t-he flue p2 andair through the fiue p', and these combine and burn together in anintense flame as they pass through the opening beneath the deflector Q.The'gas is deriVed from the pipe L, and both the air and the gas are ina highly-heated condition before commingling and burning. The fines s tand chimney R,through which the product-s ofv combustion ascend, areabout midway between the furnace P and the generators G and G', and atone side of ranges of fines passing horizontally, or nearly so, betweensuch generators and the furnace. The products of combustion descendingby the dues p pi from the furnace, and the products of combustiondescending by the flue h from the generators, are led to the chimneyR,and in their passage thereto the heat is transferred to the air andgases, respectively, reaching the furnace P through the dues pp2, sothat 'the products of combustion escaping up the chimney R arecomparatively cool. To accomplish this object the waste heat from thegenerators, as it passes down the due h, enters a transversepassage-way,S, and from that passes into the numerous horizontal fluess', and these ilues s open into a flue, s", leading across beneaththem'tothe base of the chimney. In likemanner the'products of combustionfrom the furnace P descend by theflues p p into the transvenleehannel T,and from there pass by the numerous fines t to the transverse flue tbeneath them to the base of the chimney. There is a range, U V, of pumerons horizontal fiuesplaced intermediately to the dues s t andextending nearly the whole length between the cross-ehannel S and thecross-chaunel T. Half of these u es are allotted to ai r, the y other-half to gas. The gas from the pipe-L passes into the cross flue orchannel'V; thenc' through the dues V up into the cross due o'r channelV, and by the longitudinal flue 1?.

into the bottom portion ot' the ascending tine p to the furnace, asaforesaid, and in its travel said gas becomes lu'ghly heated by itslprox-- imity to theflues s t. In passes in through a grating, dueorchannel, U, ues U to the cross flue or channel U, and by thelongitudinal channelu to the` base of the ue p', the air becomeshighlyheatod-from the proximity of the ilues so that the airand gasesare highly heated and combustion is very perfect when the air and gasesburn together over the hearth, nsbcfre like manner the air U', into across" and through the numerous described.Ii'theproductsofcombustionpissing away from the gcncratorsG G by the dueli are not perfectly consumed, atmospheric air may be admitted into thecross-channel S, so that any carbouic oxide may be consumed and increasethe heat in the lilies s'. shown gratings at s", through which such airmay be admitted.

lt will new be apparent that this apparatus We havev is `adapted to thefurnishing of a heating-gas continuously to the hearth O, because thedampers can be changed instantaneously and the steam directed throughthe generator G or G while the other generator is being heated up.

We are aware that a generator has been employed for the production ofaheating-gas to be used in metallurgie operations, and that steam hasbeen caused to pass down through the incandescent fuel while producingthis heating-gas, and the temperature of the fuel has been augmented byshutting off the steam and admitting atmospheric air.

We claim as our inventionl. The generators G G', having fiues h h' h2h3, in combination with the steam-dome and the slide-valve within thedome, and means for actuating such valve, substantially as specified.' f

. 2. The generators G G', the chambers L beneath the same, and theannular air-pipes Z, in combination with the air-pipes n m and valves n'a2, the gas-pipes L2 L3, the valves Z3 Z6, and mechanism for operatingthe same, substantially as set forth.

3. The combination of the generators G G' and iiues h' h2 h3 with thesteam-supply and valve k', the air-pipes n Z, the chambers L beneath thegenerators, the gas-pipes L2 L3, the air and gas valves, and mechanismfor actuating the same, substantially as set forth.

4. 'Ihe combination, with two adjacent generators and mechanism,substantially as specied, for admitting steam and air alternately, of afurnace or hearth for metallurgie operations, and connections forconveying the gases from the generators, and adjacent iiues for heatingthe atmospheric air in its passage to the furnace, so that the gas andheated air commingle and burn at a central point over the hearth, anduesr for conveying away lthe products of combustion from the furnace,substantially as specified.

5. The combination, with two adjacent generators for alternatelyproducing a heatinggas by steam passed through incandescent fuel, of afurnace for metallurgie operations, flues for conveyingthe gas fromeither of the generators to the furnace, and contiguous-fines throughwhich air passes to the furnace, and

Afor metallurgie operations, the ilues ss for the waste heat from thegenerators, the iiues t t forthewastc heat from the furnace, achimney,and the flues V V' for gas, and the iiues U U3 for air, the same beingcontiguous to the flues through which the products of combustion pass,so that the air and gas reach the metallurgie furnace in a highly-heatedcondition, substantially as specified.

7. The adjacent generators G G', having iiues h, and the iues h' h2,escape-flue h3, and means for supplying steam and heating the generatorsalternately for the production of a heating-gas, in combination withflues for the waste products of combustion, adjacent flues for air andgas, the flues P' P2 P3 P4, the deiiector Q, and the hearth O, formetallurgie operations, there being an opening beneath the deflector andover the hearth, at which point the gas and air commingle and burn,substantially as specified.

8. In an apparatus for producing gas for metallurgie operations, thecombination of two adjacent gas-generators,flues h' h2 h3, for theproducts of combustion, and a valve for the admission-of steam,air-pipes, and pipes for conveying away the gases, and valves for 'therespective pipes, and flues by which the generators are alternatelyheated up and gas produced, and a furnace or hearth for metallurgieoperations, and air and gas flues leading from the generators to thefurnace, substantially as specified, whereby a heating-gas is producednearly continuously, and supplied, together with heated air, to themetallurgie furnace, substantially as specified.

Signed by us this 10th day of February, A.

